Having Internet Connection Issues

My setup:

Internet provider: Spectrum

Modem: Netgear Nighthawk CM1200

Modem bought recently: Netgear Nighthawk CM3000-100NAS

Router: Asus BE19000 Tri Band RT-BE96U

My equipment is plugged into a UPS so I don’t lose internet when the power flickers off and on during a storm. I’ve had my internet setup on a UPS for almost 5 years.

Sorry for the long message in advance.

To give a timeline around what’s been happening;

   Around April this year I decided that I was going to upgrade to a Wifi 7 router once I was able to. In preparation for this I upgraded my internet to a higher speed since I was getting new equipment. When I upgraded my plan Spectrum sent me a new modem to replace my old one. I received the modem and set it up through the spectrum app. While I was waiting for my new router to get here, my old Google Nest Wifi seemingly worked fine with the new modem. I got my new Asus Wifi 7 router a few days later and immediately set it up. The router seemed to work fine and the speed was good so I was happy.

  I started to notice moderate issues with my internet for the first month that I had it. My internet speed would randomly go down to almost nothing, which would cause me to disconnect from whatever I was doing, and then come back a minute later or so. On other occasions it would last until I reset my equipment. Then the worst that happened was my internet would just disappear entirely and wouldn’t come back unless I reset the equipment. I could see it doing this throughout the day since I have a nest doorbell and my phone would tell me the doorbell had lost connection to the internet for a long period of time while I was at work. This would happen every couple days, sometimes multiple times a day. I called Spectrum and all they would tell me is that there’s been no outages and the internet connection has been stable going to modem for at least the last 24 hours, even though internet was out at my house while I was talking to them. A few days later one of my coworkers had said to me that it could be that the modem is struggling to communicate with my brand-new router, so I should try getting a new modem. I took his advice and went to Best Buy to pick up a Netgear modem they had in stock, the Nighthawk CM1200. I took it home, hooked it up and called Spectrum so they could activate it. After they did I had ZERO issues with my internet connection for five months! I was glad I found the solution.

   I live in Florida, so a few weeks ago I had felt the effects of both Hurricane Helene and Milton. Luckily there was no damage to my house, so I figured everything was fine. It was right after the first Hurricane Helene past us that I noticed my internet was acting up again. At first I figured something outside was damaged by the storm and I’d need to call a technician out to check it out. The problem is the issue is pretty much the same thing that was happening five months ago.

   So here’s what I’ve been trying to do at home to solve the issue:

Resetting both the modem and router would fix the problem for a while, but it would show back up later.

If I unplug just the modem and plug it back in after a while without touching anything else the connection works fine for a while, but it would also show up again later.

I turned off QoS on my router since I read that could be what’s causing the slow speeds.

Mainly out of frustration, I went and bought a new modem to see if that would fix the problem like last time. That’s when I got the Nighthawk CM3000. After calling spectrum and having them set up the new modem the Customer rep asked me if my modem was connected directly to the wall or if it was plugged into a power strip. I told her about my UPS and that I’ve never had issues with that before. The new modem actually shows faster speeds than the last one, but about two hours after the new modem was set up I lost connection again. I unplugged the modem from the UPS and plugged it directly into the wall just to see if that helps like the rep said. That’s how my setup is right now.

If anyone has any insight on things that might be able to help I’d appreciate it. If it continues like this my next step is to have Spectrum send someone out to check my house